Last year I had 3 pine trees cut down in my yard due to safety concerns during inclement weather. These trees were healthy and disease free. After grinding the stumps I had piled the remaining wood chips from stump grinding into a pile. I placed lawn clippings, dead shrubs, on the pile. Coming back to this pile I have noticed it is beginning to compost, nearing a dark brown/blackish color.
Would it be safe to mix this inside a 5 gallon bucket for container gardening? Are there any chemicals present in pine that contribute to allelopathy that would harm vegetable plants?